It's not just voat. There are other sites that I didn't know were checking me out. On VPN, I get something like "unable to verify your browser," and sometimes an elaborate ritual that involves a captcha or two. My email client auto-checks my email every few minutes, and google sends me warning mails and text messages that someone has my password.
I still have first party cookies enabled, I'm not sure why coming through a different IP would freak so many websites out.
What if I were on dialup? I've been to Lowe's and other places and checked mail and surfed, nothing ever happened.